CVE-2026-40215 MEDIUM

CVE-2026-40215

Vendor Openvpn
Product OpenVPN
Weakness CWE-125
Published June 8, 2026
Last update June 16, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L

What the vulnerability does

01Description

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.

Key dates

02Disclosure timeline

June 8, 2026 CVE published
June 16, 2026 Record updated